Grain Size Analyses
samples for grainsize analysis are collected using a petit Ponar
sediment grab or direct core sampling by divers. The sediment grab
is equipped with a drop video camera for obtaining imagery of the
substrate and assurance of grab sample quality.
grainsize analyisis for habitat mapping and ground-truthing is performed
using a Micromeritics Optisizer 5400 PSDA particle size analyzer.
This optical device measures particle diameters ranging from 40
µm to 20 mm and generates particle size distribution results.